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Recreational Mathematics
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Demonstrations 761  780 of 908
A 2pire Map
Sweet Heart
A Rose for Valentine's Day
Broken Heart Tangram
The Troublesome Twelve Circle Problem
Maurer Roses
Graphs of Successive Digits of Pi, e, and Phi
Ramsey(3,3) = 6
Problem 11340 of The American Mathematical Monthly
Random Chord Paradox
Ramsey(3,3,3)>16
The Pigeonhole Principle  Repunits
A Geometric Proof of the Square Pyramidal Number Formula
Balanced Ternary Notation
FourColor Maps
Approximations to the Distribution of Primes
3n+1 Flying Saucers
An IMO Triangle Problem
Pinwheel Tiling
An Interval Eventually Bounding Trajectories of the Logistic Map
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